CN1760638A - Car borne GPS navigation, video and audio system - Google Patents
Car borne GPS navigation, video and audio system Download PDFInfo
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- CN1760638A CN1760638A CN 200410086508 CN200410086508A CN1760638A CN 1760638 A CN1760638 A CN 1760638A CN 200410086508 CN200410086508 CN 200410086508 CN 200410086508 A CN200410086508 A CN 200410086508A CN 1760638 A CN1760638 A CN 1760638A
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Abstract
The system includes system control chip, navigation system, video and audio play back system, audio switching module, video switching module, audio output device, video output device, and power source device. After receiving commands of navigation and recreation transferred by input device, the system control chip outputs control commands to the navigation system and the video and audio play back system respectively to make the navigation system and the video and audio play back system output video and audio signals to audio and video switching modules at same time. Based on commands from system control chip, audio and video switching modules output multiple audio and video signals to audio and video output devices. The audio and video output devices are capable of switching each audio and video signal in order to implement function of carrying out navigation and recreation at same time.
Description
Technical field
The present invention relates to a kind of image and sound guidance system (multimedia audiovisual system) that is used on the vehicles such as automobile, CD/VCD/DVD player, multiple amusement function (AM/FM/TV), audio frequency and video control, digital power amplifier, display screen etc. are incorporated in the cabinet simultaneously, and the vehicle backing backsight function is arranged.Function audio-visual and that navigation is served simultaneously especially can be provided, can improve and drive enjoyment.
Background technology
Mostly be the absolute construction of entertainment systems or navigational system in the market.Usually be that entertainment systems need add the mode that navigational system or navigational system add entertainment systems in addition in addition, some product in addition also with power amplification system as standalone module, need independent the installation, product is installed connect complicated; Take interior space, use also very inconvenient.
Summary of the invention
In order to solve each stand-alone product installation in the prior art, to connect difficulty, take problems such as interior space, the invention provides a kind of car borne GPS navigation, audio-video system, in a system, integrated the DVD audio-video playing function, navigation feature, radio, TV functions, six road 30W power amplifiers, 7 inches display screens, sound effect control, video disc player interface, vehicle backing backsight interface, many back seats interface of monitor.Simultaneity factor can to each functional module unify control and function switching, and can also realize the function that navigation feature and radio, TV, video disc player use simultaneously.
The concrete technical scheme of this invention provides as follows:
A kind of car borne GPS navigation, audio-video system comprise: system control chip, navigational system, video-audio playing device, input media, audio frequency handover module, video frequency switching module, audio output device, video output device and supply unit; Described system control chip connects the output terminal of described input media, the output terminal of described system control chip connects described navigational system respectively, video-audio playing device, the audio frequency handover module, the input end of video frequency switching module, the output terminal of described navigational system, video-audio playing device connects the input end of audio frequency handover module and video frequency switching module respectively, and the output terminal of described audio frequency handover module and video frequency switching module connects audio output device and video output device respectively.
Described system control chip receives the user instruction that input media transmits, if navigation command, system control chip difference navigation system and audio frequency, video switching device output control command, navigational system receives navigation data, exports navigating audio, vision signal to audio frequency handover module and video frequency switching module as calculated; If amusement order, system control chip is respectively to video-audio playing device, audio frequency, video frequency switching module output control command, video-audio playing device is to audio frequency, video frequency switching module output entertainment audio, vision signal, and audio frequency, video frequency switching module are by audio frequency, described each audio frequency of video output device output, vision signal.
Described system control chip can be according to user instruction, and the control command of navigation system and video-audio playing device output simultaneously makes navigational system and video-audio playing device export sound, vision signal simultaneously; Audio frequency, video frequency switching module export multichannel voice frequency, vision signal to audio output device and video output device respectively; Described audio output device and video output device can switch described each audio frequency of output, vision signal respectively.
Description of drawings
Fig. 1 is radio control interface circuit figure;
Fig. 2 is power amplifier interface circuit figure;
Fig. 3 is audio frequency handover module interface circuit figure;
Fig. 4 is navigational system, DVD player, video disc player and back-sight visual system circuit diagram;
Fig. 5 is the system control chip circuit diagram;
Fig. 6 is video switch and input system interface circuit figure;
Fig. 7 is the module connection layout of the embodiment of the invention;
Fig. 8 is the program flow diagram of the system control chip of the embodiment of the invention.
Embodiment
As shown in Figure 7, car borne GPS navigation of the present invention, audio-video system comprise: system control chip 1, navigational system 2, video-audio playing device 3, interactive interface 6, audio frequency handover module 4, video frequency switching module 5, digital power amplifier 7, backsight interface 9 and supply unit 10; Wherein, video-audio playing device 3 comprises DVD player, radio, TV signal receiver and video disc player.DVD player wherein has DVD decode system and DVD player core.The annexation of each module is as follows:
Briefly introduce each functions of modules of car borne GPS navigation of the present invention, audio-video system below:
Interactive interface 7: this device is imported user instruction by keyboard, touch-screen, and can switch each picture signal of output video handover module output.
DVD player 31: comprise DVD decode system and DVD player core; Wherein the DVD decode system provides the ATAPI interface of system and DVD player core, and system control chip 1 will pass to the DVD decode system from the order that interactive interface obtains by communication signal.If the amusement video disc is the reporting system control chip then, make system enter the play mode that entertainment mode is video-audio signals such as DVD/VCD/CD/MP3, the DVD decode system is sent to video frequency switching module with picture signal; Sound signal is sent to the audio frequency handover module.If the navigation data video disc is the reporting system control chip then, make system enter navigation mode, the DVD decode system is sent to navigation feature CPU with data simultaneously.
Navigational system 2: system control chip 1 will pass to navigational system 2 from the order that interactive interface obtains by communication signal, the function of control navigational system.Navigational system receives navigation data and calculates the realization navigation feature from the DVD decode system.Navigational system is sent to video frequency switching module with the navigation picture signal; The navigating audio signal is sent to sound effect control and audio frequency handover module.It is pointed out that navigational system 2 is not limited to obtain navigation data from the DVD video disc, it also can obtain corresponding navigation information by wireless Internet access or other modes.
Radio, TV functions module 32: system control chip 1 user instruction is controlled this module, realizes the radio TV functions.Television image signal is sent to video frequency switching module; Television audio signals and radio sound signal are delivered to sound effect control and audio frequency handover module.
Video disc player interface 33: under the control of system control chip 1, the picture signals such as DVD/VCD/CD/MP3 in the video disc player are sent to video frequency switching module; Video disc player sound signal is delivered to sound effect control and audio frequency handover module.The broadcast of system control chip by control signal control video disc player, change function such as dish.
Cassette recorder 34: system control chip 1 is controlled this module output audio signal to audio frequency switching device according to the Cassette Play order of user's input;
Video frequency switching module 4: the picture signal that each functional module is transmitted is sent to interactive interface under the control of system control chip.
Sound effect control and audio frequency handover module 5: the sound signal that each functional module is transmitted is sent to digital power amplifier under the control of system control chip.System control chip is finished the control of sound effect control chip.
Digital power amplifier 6: realize the power amplification of audio frequency.
Power-supply system 9:, realize the control of power supply for each functional module provides power supply.
System can also be provided with many back seats monitor as required, and this monitor has the function of image switching, and front-seat when playing navigation picture or backsight picture to realize, back row can see the amusement picture; To reach the function that navigation, amusement are used simultaneously.
Below in conjunction with Fig. 8, the workflow of concrete introducing system control chip 1:
System control chip receives the user instruction that transmits from interactive interface, sends control signal according to user instruction to corresponding navigation system and video-audio playing device, particularly:
If be navigation command, then system control chip sends instruction to the DVD decode system, as being the navigation video disc in the DVD player, DVD decode system reporting system control chip, navigational system is under the control of system control chip, receive navigation data from the DVD decode system, export the navigating audio signal to the audio frequency handover module as calculated, the vision signal of will navigating exports video frequency switching module to; If video disc is the amusement video disc, DVD decode system reporting system control chip, and under the control of system control chip, export entertainment audio signal to the audio frequency handover module, export the entertainment video signal to video frequency switching module;
If user's input is the amusement order, system control chip will be according to concrete AM/FM/TV/Cassette/VCDPlay command mode, to corresponding radio, TV, cassette recorder, video disc player interface sends steering order, described radio, TV, video disc player interface arrives the audio frequency handover module according to control command with audio signal output, and vision signal exports video switcher to.
If the user has imported the backsight monitor command, system control chip is connected the backsight interface, exports the picture signal that rearview camera obtains to video frequency switching module by the backsight interface.
System control chip can be according to user instruction, navigation device navigation respectively, each audio-visual entertainment device and backsight surveillance output control command, navigation, amusement, back vision function are carried out simultaneously, and interactive interface and many back seats monitor can select to switch output navigation, amusement or backsight signal.
Each module interface circuit figure of the embodiment of the invention please refer to Fig. 1 to shown in Figure 6.Wherein, the trend of the input/output signal of each interface circuit can be with reference to this signal name and subsequent numeral among the figure, the corresponding page number of this numeral Figure of description.Just the signal of respective name is connected in the corresponding page number of this signal and Figure of description.For example, the signal of the pin one 1 of VU8 " IRDATB 4 " represents that it links to each other with the IRDATB signal of JG1 pin 8 among Fig. 4 among Fig. 5, so the signal trend of each interface is no longer repeated in instructions among the figure.
Below be the operation instructions of this system:
One. system start-up and off-mode
1. system start-up flow process
System start-up → show navigator instrument start-up picture → enter last user job pattern → use for the first time in this way then enters navigation or DVD mode of operation.
2. off-mode
Off-mode refers to ACC ON and the state of system closedown.Show date and the time this moment.
| 2003-05-07 WEDNESDAY 2:15PM |
Date and time can be adjusted by face version or telepilot.
ENTER: enter (continuing)/withdraw from the time on date to adjust program by more than 2 seconds.
↑: increase progressively the date time figure.
↓: the date time figure successively decreases.
←: the slider position that moves to left switches to an adjustment project.
→: the slider position that moves to right switches to next adjustment project.
Surpass inoperation in 10 seconds, withdraw from the time on date and adjust program, and confirm to have changed content.
Two. mode of operation
1. total following several modes: FM, AM, TV, NAVIGATION, PLAYER, CHANGER, BACKCAMERA after each mode switch, is presented at the title (full name as previously mentioned) of present mode 10 seconds of the upper left corner of screen.
2. mode switch:
Switched by the SOURCE key on the panel, order is:
1. insert the DVD/VCD/CD/MP3 video disc in the host driver, system enters the PLAYER pattern automatically.During the PLAYER pattern, if no dish answers the display reminding statement not have dish;
2. under the PLAYER pattern,, should enter the NAVIGATION pattern if be the map dish in the host driver
Three. the definition of the interface/menus under each mode of operation
(1) FM and AM
1. all amounts that can regulate have:
(1). audio: left and right sides balance;
Anterior-posterior balance;
3-D audio (ON/OFF)
(2). tonequality: bass is regulated
Middle pitch is regulated
High pitch is regulated
(3). volume: volume is regulated
(4). the search of channel automatic/hand
Further operation is as follows:
" ↑ ↓ " key moves/selects each menu item, and the background of selecteed menu item is by highlight.
Menu item has two classes, and the one, the order class, as " automatic channel search ", another kind of in order to select parameter by " Enter ", can be made as the 3D audio and open or close.
" ← → " key is in order to regulate the numerical value of selected parameter, and " ← " lowers, and " → " increases.
Attention all can change on/off for the setting of on/off with " ← " or " → ".
By " EASCAPE " key, system is quiet immediately under the normal play state, and the upper right corner shows quiet state, otherwise this does not capablely show;
Occur by menu behind menu key, by a menu key or not operation in 20 seconds, menu disappears again.
Automatically search: to successively decrease direction or begin automatic search to the frequency increments direction of frequency, whenever find a platform by " ← ", store in order automatically by " → ", the search back backtrack menu automatically that finishes, and play first and stored the radio station.
Manual search: switch storage platform number by " ↑ ↓ " key, by " ← " to frequency successively decrease direction or by " → " to the frequency increments direction begin the search, find a platform, search can stop and beginning playing this content automatically, this moment screen display " storage is please by "enter" key" ", by " Enter " key, this frequency can be stored in the platform number on the left side, number adds 1 automatically with the backstage.Again by " ← " to successively decrease direction or begin to search for next platform by " → " to the frequency increments direction, so circulation of frequency.After manual search finishes, return previous menu by " ESC ".
2. radio storage of channel switching:
With "+/-" key on the panel: "+" key upwards switches, and "-" key switches downwards.
3. radio channels is sought at random:
, begin to play after finding a platform to successively decrease direction or begin to seek to the frequency increments direction of frequency by " ↓ " by " ↑ ".The frequency trim employing " ← → " key.Picture is with the radio key frame, and display frequency changes thereupon in the searching process.Display station number not during broadcast.
4. master volume is regulated:
Regulate with panel " VOLUME " knob: the volume that turns clockwise increases, and inhour reduces.
(2) TV
1. all amounts that can regulate have:
(1). audio: left and right sides balance:
Anterior-posterior balance:
3D audio (ON/OFF)
(2). tonequality: bass is regulated
Middle pitch is regulated
High pitch is regulated
(3). volume: volume is regulated
(4). the search of channel automatic/hand
(5). visual image quality is regulated: brightness, colourity.
2. adjusting menu
Control is with FM and AM
3. channel switches:
With "+/-" key on the panel: "+" key upwards switches, and "-" key switches downwards.
4. television channel is sought at random:
, begin to play after finding a platform to successively decrease direction or begin to seek to the frequency increments direction of frequency by " ↓ " by " ↑ ".The frequency trim employing " ← → " key.
5. master volume is regulated:
Regulate with panel " VOLUME " knob: the volume that turns clockwise increases, and inhour reduces.
(3) NAVIGATION
1. press " navigation " key in all patterns of mode switch shown in 22, or insert the map dish, system enters navigation mode.If this moment is no dish or be not the map dish, then screen display information in the host driver:
2. in the navigation mode, press " SRC " key, system display mode conversion picture in order to whether maloperation of prompting user, when the user determines to press other patterns, withdraws from navigation mode again and enters user-selected pattern.
3. master volume is regulated: regulate with panel " VOLUME " knob: the volume that turns clockwise increases, and inhour reduces.
(4) PLAYER
1. all amounts that can regulate have:
(1). audio: left and right sides balance:
Anterior-posterior balance:
3D audio (ON/OFF)
(2). tonequality: bass is regulated
Middle pitch is regulated
High pitch is regulated
(3). volume: volume is regulated
(4). the search of channel automatic/hand
(5). visual image quality is regulated: brightness, colourity.
2. audio/tonequality/volume is regulated menu (being breathed out by " MENU " key on the panel)
Control is with FM and AM
3. master volume is regulated:
Regulate with panel " VOLUME " knob: the volume that turns clockwise increases, and inhour reduces.
4.DVD the special function of player:
Enter the special function menu of DVD player by set key on " LOCATION " key on the panel or the telepilot.
5. play, suspend and stop
By " ENTER " key play content, suspend play content by " ENTER " key once more, begin to play from time-out by " ENTER " key more subsequently.Stop the content to be play by " LOCATION " key.When DVD playing back, stop the content of being play and enter the special function menu of DVD by " LOCATION " key.
6. F.F., rewind down and cursor key
Under broadcast state, be fast-forward to next fragment (song) by "+" key, fall back on last fragment (song) soon by "-" key.
In the special function menu of DVD, come moving cursor by " ↑ ↓ ← → " key, confirm selected content by " ENTER " key.
7.CD/MP3
Work as CD, HDCD, or after the MP3 video disc put into, tone channel began to broadcast, picture is as shown below, and panel and remote control "+/-" key may command enters next song, a last song.
(4) CHANGER
1. all amounts that can regulate have:
(1). audio: left and right sides balance:
Anterior-posterior balance:
3D audio (ON/OFF)
(2). tonequality: bass is regulated
Middle pitch is regulated
High pitch is regulated
(3). volume: volume is regulated
(4). the search of channel automatic/hand
(5). visual image quality is regulated: brightness, colourity.
2. regulate menu (breathing out) by " MENU " key on the panel
Control is with FM and AM
3. master volume is regulated:
Regulate with panel " VOLUME " knob: the volume that turns clockwise increases, and inhour reduces.
4. disk-exchanging function:
Press " ↑ " key on the panel, change last dish and broadcast.If be first dish, then change last dish; Press " ↓ " key on the panel, change a dish and broadcast.If be last dish, then change first dish.
5. play, suspend and stop
By " ENTER " key play content, suspend play content by " ENTER " key once more, begin to play from time-out by " ENTER " key more subsequently.Stop the content to be play by " LOCATION " key.
6. F.F., rewind down key
Under broadcast state, be fast-forward to next fragment (song) by "+" key, fall back on last fragment (song) soon by "-" key.
7.CD/MP3
Work as CD, after the MP3 video disc was put into, tone channel began to play, and panel and remote control "+/-" key may command enters next song, a last song.
(5) backsight (BACKCAMERA)
When controller detects astern signal, automatically vision signal is switched to the rearview camera video.The power amplifier loudspeaker are quiet.Automatically get back to original state after leaving reverse gear.
(6) phone hands-free (RING ON)
The hands-free phone bell ring, the main frame power amplifier is quiet, and screen display " MUTE " recovers power amplifier after receiving calls and finishing automatically.
What more than illustrate is the preferred embodiments of the present invention, those skilled in the art will appreciate that the variation on any form and the details all is fine in the spirit and scope that do not depart from the qualification of claim of the present invention and equivalent scope thereof.
Claims (13)
1. a car borne GPS navigation, audio-video system is characterized in that, comprising: system control chip, navigational system, video-audio playing device, input media, audio frequency handover module, video frequency switching module, audio output device, video output device and supply unit; Described system control chip connects the output terminal of described input media, the output terminal of described system control chip connects described navigational system respectively, video-audio playing device, the audio frequency handover module, the input end of video frequency switching module, the output terminal of described navigational system, video-audio playing device connects the input end of audio frequency handover module and video frequency switching module respectively, and the output terminal of described audio frequency handover module and video frequency switching module connects audio output device and video output device respectively.
2. car borne GPS navigation according to claim 1, audio-video system, it is characterized in that, described system control chip receives the user instruction that input media transmits, if navigation command, system control chip difference navigation system and audio frequency, video switching device output control command, navigational system receives navigation data, exports navigating audio, vision signal to audio frequency handover module and video frequency switching module as calculated; If amusement order, system control chip is respectively to video-audio playing device, audio frequency, video frequency switching module output control command, video-audio playing device is to audio frequency, video frequency switching module output entertainment audio, vision signal, and audio frequency, video frequency switching module are by audio frequency, described each audio frequency of video output device output, vision signal.
3. car borne GPS navigation according to claim 2, audio-video system, it is characterized in that, described system control chip can be according to user instruction, and the control command of navigation system and video-audio playing device output simultaneously makes navigational system and video-audio playing device export sound, vision signal simultaneously; Audio frequency, video frequency switching module export multichannel voice frequency, vision signal to audio output device and video output device respectively; Described audio output device and video output device can switch described each audio frequency of output, vision signal respectively.
4. car borne GPS navigation according to claim 3, audio-video system is characterized in that, described video-audio playing device is connected with described navigational system, and described navigational system can read navigation data from the storage medium of video-audio playing device.
5. car borne GPS navigation according to claim 4, audio-video system is characterized in that, described navigational system is connected with video-audio playing device by USB or EPP interface.
6. car borne GPS navigation according to claim 4, audio-video system, it is characterized in that, described video-audio playing device is a DVD player, it has DVD decode system and DVD player core, this DVD decode system is decoded to the data of described DVD player core storage medium, when storage medium is navigation data according to the order of system control chip, DVD decode system reporting system control chip, and export data to navigational system; When storage medium is recreation data, DVD decode system reporting system control chip, and export picture signal to video frequency switching module, with audio signal output to the audio frequency handover module.
7. according to claim 1,2,3 or 6 described car borne GPS navigations, audio-video system, it is characterized in that described video-audio playing device also comprises one or more in the following apparatus:
One radio, its input end connected system control chip, output terminal connects audio frequency handover module and video frequency switching module respectively;
One TV signal receiver, its input end connected system control chip, output terminal connects audio frequency handover module and video frequency switching module respectively;
One video disc player, its input end connected system control chip, output terminal connects audio frequency handover module and video frequency switching module respectively;
One cassette recorder, its input end connected system control chip, output terminal connects the audio frequency handover module.
8. car borne GPS navigation according to claim 7, audio-video system, it is characterized in that, described onboard navigation system also comprises a backsight surveillance, comprise backsight interface and backsight monitor, the input end of described backsight interface is connected system control chip and backsight monitor respectively, its output terminal connects video frequency switching module, system control chip is according to user's backsight monitor command, send control command to backsight interface and video frequency switching module, export the rear view picture to video frequency switching module by the backsight interface.
9. car borne GPS navigation according to claim 8, audio-video system, it is characterized in that, described backsight surveillance can be under the control of system control chip, in navigational system, video-audio playing system in audio frequency, video frequency switching module output sound, vision signal, to video frequency switching module output rear view picture, described audio output device and video output device can switch described each audio frequency of output, vision signal respectively.
10. car borne GPS navigation according to claim 8, audio-video system is characterized in that, described video output device comprises several back seat monitors.
11. car borne GPS navigation according to claim 9, audio-video system is characterized in that, described input media is a touch display screen.
12. car borne GPS navigation according to claim 9, audio-video system is characterized in that, described input media is a keyboard.
13. car borne GPS navigation according to claim 9, audio-video system is characterized in that, described audio output device comprises a digital power amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100865084A CN100504302C (en) | 2004-10-13 | 2004-10-21 | Vehicular GPS navigation, video and audio system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200410083984.0 | 2004-10-13 | ||
| CN200410083984 | 2004-10-13 | ||
| CNB2004100865084A CN100504302C (en) | 2004-10-13 | 2004-10-21 | Vehicular GPS navigation, video and audio system |
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| CN1760638A true CN1760638A (en) | 2006-04-19 |
| CN100504302C CN100504302C (en) | 2009-06-24 |
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| CNB2004100865084A Expired - Fee Related CN100504302C (en) | 2004-10-13 | 2004-10-21 | Vehicular GPS navigation, video and audio system |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008101389A1 (en) * | 2007-02-01 | 2008-08-28 | Netac Technology Co., Ltd. | A gps navigation system with entertainment information playing function and the entertainment information playing method |
| US8214137B2 (en) | 2007-09-26 | 2012-07-03 | Denso Corporation | In-vehicle information apparatus and in-vehicle multi-media system |
| CN102547144A (en) * | 2012-02-28 | 2012-07-04 | 深圳市诺威达科技有限公司 | Device and system for supporting switching of multipath video signals |
| CN102592639A (en) * | 2012-02-07 | 2012-07-18 | 宁波向往智能科技有限公司 | Background music system and method thereof |
| CN102602346A (en) * | 2012-03-16 | 2012-07-25 | 四川长虹电器股份有限公司 | Method for automatically switching audio and video signals of bus |
| CN101549670B (en) * | 2009-05-15 | 2012-09-26 | 深圳市振潍科技有限公司 | Vehicle electronic equipment upgrade device, vehicle electric system and vehicle |
| CN103335656A (en) * | 2013-06-25 | 2013-10-02 | 东莞市双俊电子科技有限公司 | Vehicle-mounted navigation system with improved structure |
| CN105225684A (en) * | 2015-08-19 | 2016-01-06 | 贺中义 | A kind of method listening to transport information or navigation information when broadcast listening |
| CN106062875A (en) * | 2014-06-10 | 2016-10-26 | 韩国帝诺思有限公司 | Device for controlling change of screen and audio of AVN system |
| CN106527742A (en) * | 2017-01-10 | 2017-03-22 | 深圳市互联互通汽电科技有限公司 | Intelligent switching device for vehicle-mounted display screen |
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- 2004-10-21 CN CNB2004100865084A patent/CN100504302C/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008101389A1 (en) * | 2007-02-01 | 2008-08-28 | Netac Technology Co., Ltd. | A gps navigation system with entertainment information playing function and the entertainment information playing method |
| CN101237764B (en) * | 2007-02-01 | 2011-07-20 | 深圳市朗科科技股份有限公司 | GPS navigation system with entertainment information playing function and its playing method |
| US8214137B2 (en) | 2007-09-26 | 2012-07-03 | Denso Corporation | In-vehicle information apparatus and in-vehicle multi-media system |
| CN101549670B (en) * | 2009-05-15 | 2012-09-26 | 深圳市振潍科技有限公司 | Vehicle electronic equipment upgrade device, vehicle electric system and vehicle |
| CN102592639A (en) * | 2012-02-07 | 2012-07-18 | 宁波向往智能科技有限公司 | Background music system and method thereof |
| CN102547144A (en) * | 2012-02-28 | 2012-07-04 | 深圳市诺威达科技有限公司 | Device and system for supporting switching of multipath video signals |
| CN102602346A (en) * | 2012-03-16 | 2012-07-25 | 四川长虹电器股份有限公司 | Method for automatically switching audio and video signals of bus |
| CN103335656A (en) * | 2013-06-25 | 2013-10-02 | 东莞市双俊电子科技有限公司 | Vehicle-mounted navigation system with improved structure |
| CN106062875A (en) * | 2014-06-10 | 2016-10-26 | 韩国帝诺思有限公司 | Device for controlling change of screen and audio of AVN system |
| CN105225684A (en) * | 2015-08-19 | 2016-01-06 | 贺中义 | A kind of method listening to transport information or navigation information when broadcast listening |
| CN105225684B (en) * | 2015-08-19 | 2018-02-09 | 上海创单电子科技有限公司 | It is a kind of that transport information or the method for navigation information are listened in broadcast listening |
| CN106527742A (en) * | 2017-01-10 | 2017-03-22 | 深圳市互联互通汽电科技有限公司 | Intelligent switching device for vehicle-mounted display screen |
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| CN100504302C (en) | 2009-06-24 |
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